asn.dev

Autonomous system

AS63959 HKSTL-HK - Hong Kong Syscloud Technology Limited

Unclassified APNIC

IPv4 addresses 1.28K 4 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly HK
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Hong Kong Syscloud Technology Limited

Hong Kong · AI-generated

cloud exchange enterprise hong-kong

HKSTL-HK is operated by Hong Kong Syscloud Technology Limited.

What it's used for

  • The address space carries cloud exchange services, with netnames HKSTL-HK and HASW-CN associated with the operator and Beijing Hua An Su Wei Network Technology CoLtd.
  • The AS announces 1280 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, with 3 observed neighbours, indicating a small-scale enterprise or cloud infrastructure footprint rather than a large access network.
  • Traffic from this AS consists of cloud exchange endpoints and enterprise network services provided by Syscloud.

Notable

  • Registrants for the majority of prefixes align with the announcer, listing HONG KONG SYSCLOUD TECHNOLOGY LIMITED, while one prefix is registered to Beijing Hua An Su Wei Network Technology CoLtd.
  • The address inventory is compact, comprising a mix of /23 and /24 blocks in the 103.52.0.0/16 and 45.113.0.0/16 ranges, plus a single /32 IPv6 prefix.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

3 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6939Hurricane Electric LLC287
AS21859Zenlayer Inc66
AS138195MOACK.Co.LTD59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-05, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 4 prefixes · 1.28K addresses IPv6 1 prefixes

CountryNamePrefixes
HKHong Kong5

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS63959
Registry name
HKSTL-HK
Registrant
HONG KONG SYSCLOUD TECHNOLOGY LIMITED
Abuse contact
mengchenjin@syscloud.cn
Registered
2015-03-12
Last changed
2020-06-05
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 7 with no ROA
ROAs
1 authorising AS63959
ASPA
no ASPA record
IRR
100% registered · 7 of 7 announcements
Route objects
22 naming AS63959

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 453 networks and 1,854 prefixes, as published 2026-11-06. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check